Low-cost DIY thermal imaging - liquid crystal paint testing--- make money online

I am trying to develop a low-cost DIY thermal imaging device.  The commercially available thermal imaging cameras still cost well over $1000 because of high production costs and low demand.  Many hobbyists would like to have a cheap thermal imaging camera even if performance is not as good as commercial or military units.  My goal is to build such a camera.

In this video, I am testing one possible approach:  Using a very thin projection screen that is painted with thermochromic liquid crystals.  These liquid crystals change color in the temperature range 77*F to  86*F.  Ideally, the projection screen housing would be heated (or cooled) to 77*F, so that all incident thermal radiation would raise the screen temperature higher than this, and immediately cause a color change.

okay so here we are it's a day one of

the low-cost thermal imaging project and

I'll show you what I've made today just

show you how it works first and then

give you a little bit of an explanation

so this is a totally passive device that

I made out of liquid crystals and a

germanium latins and as you can see it's

focusing the heat from this thermal

strip heater on to the liquid crystal

screen and then you can view it as a

heat pattern so if I leave it in one

place and then put my hand between the

heater and the liquid crystal viewer you

can see it dissipate and as you can see

the response time really isn't that good

it's measured in seconds and if I move

it away from the source it takes quite a

while for the screen to go completely

black but this is a pretty interesting

development I thought

as you can see here the distance

actually is pretty good we're about six

feet from that strip heater and still

manages to show a pattern on the screen

faint but there

okay so let's talk about how this thing

is made it's it's actually quite simple

the most unusual part is this germanium

lens on the front so even though it

looks like it's opaque actually it is

opaque to a visible light it's

transparent to long-wave infrared so I

got this lens off of ebay but they're

relatively easy to find and not

astronomically expensive I paid about

$40 I think for this off ebay and

brand-new maybe there are a hundred

dollars or something like that but

they're not as difficult to find as the

actual thermal imaging elements the

micro bolometer

so we have the lens on the front of this

thing and the screen is a piece of very

very thin plastic shopping bag this is

probably polyethylene it's about a half

a thousandth of an inch thick which I

stretched over the a piece of acrylic

tube it's not done very well as I'll

just slap together to test it out and

then I painted the shopping bag with

black spray-paint meant for plastic and

then sprayed a very thin layer of this

liquid crystal paint from Edmond

scientific and I used a little airbrush

to do that so that's really all I did I

just wanted to see how well this was

going to work

the liquid crystal paint is actually

pretty cool stuff to play with in its

own right I just used this plain old

piece of paper as a backing when I was

spraying the little thermal imaging

screen and just the scraps are actually

pretty fun to play with it seems very

expensive the paint was about thirty or

forty dollars for that little tiny vial

there but it really does go a long way

so the next steps will be to see if I

can increase the spatial and temporal

resolution of this little screen here I

don't really know how easy that's going

to be it might be kind of impossible but

I'm thinking about using something even

thinner than this plastic half thousand

shopping bag maybe some sort of a

surface that has bristles that stick out

so the tips of the bristles will contain

the color change the liquid crystal

paint and that way they'll have an even

lower thermal mass than that thin

plastic bag so this is day one and we'll

see where we go from hereTop Search Keyword : online earning, , make money online, earn money online, online earning, online earning sites, make money online free, online money income, earn money online free, money online, best way to earn money online, online income site, money earning websites, best online earning sites, easiest way to earn money online, earn money payment bkash, online money income site